Machine for fitting stereotype plates and their backing



(No ModeL) v G. E. LLOYD. I MACHINE FOR FITTING S'TEREOTYPE PLATES AND THEIR BACKING.

Patented Jan. 5, 1886.

Fig.

yENTOR ATTORNEY WITNESSES: WM

; NITE STATE ATENT UFFECE...

GEORGE E. LLOYD, OF CHICAGO, ILLINOIS.

MACHINE FOR FITTING STEREOTYPE PlATES AND THEIR BACKING.

a'SPECIFICAT UI" forming part of Letters Patent No. 333,530, dated January 5, 1886.

v Applicationfiled May 12, 1885. Serial No. 165,172. (No model.)

To all whom it may concern:

Be it known that I, GEORGE E. LLOYD, of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Circular Saws and Attachments; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

The object of my invention is to furnish a circular saw and attachments especially adapted for use in the manufacture of stereotype plates and bases.

In the drawings, Figure 1 is a vertical longitudinal section of my invention. Fig. 2 is an elevation of the rear end of the same. Fig. 3 shows a stereotype plate and base in the manufacture of which the saw is used. Fig. 4 shows a transverse section of one of the attachments. Fig. 5 shows a transverse section of another attachment, and Figs. 6 and 7 show plan views of said attachments.

Reference being had to the drawings, A. represents a rectangular table-frame supported on legs and having alongitudinal central beam, A, supported by the end irons of frame A. This beam, A, is provided at about its center of length with bearings for the shaft B,which' extends transversely through suitable bearings in the side of frame A,and has a pulley on its outer end, and a saw secured in position by suitable arbors on its inner end, as illus trated in the drawings.

Projecting from the rear end of the frameA are lugs b I), having suitable bearings for the pintle or pivotal shaft 0, on the ends of which is secured the bed-plate D by means of lugs (2, extending downward therefrom, as shown, from the rear corners. This I accomplish by securing the ends ofshaft a fast in the lugs depending from the bed-plate, screw-threading said shaft and placing nuts 01 thereon contiguous to the outer surfaces of the lugs (Z. Thus by tightening one nut and loosening the other the shaft and bed D may be adjusted to a nicety.

The bed-plate D is provided with asuitable p slot for the accommodation of the saw, and it can be oscillated vertically by means of the.

hand-screw E passing vertically through the tapped portion of frame A in the front end of the machine, and in such position that its top end bears against the under surface of said bed D. Thus by manipulating said screw the bed is raised or lowered and the depth of the kerf of said saw regulated.

In Fig. 3 will be seen a stereotype plate and base. The plate has a T- mortise in its under surface, and the base a T-tenon on its upper surface corresponding in dimensions to the T- mortise in the plate, into which it is designed to enter. In making these plates and bases the tenon is cast with vertical side walls and. the mortise likewise. v

To obtain the construction shown in Fig. 3, I make a guide, F, as shown, which is placed longitudinally across the bed and secured in position by dowel-pins 6, arranged as shown in dotted lines in Fig. 6, which enter suitable holes in the bed D. This guide F is provided with a vertical flange, f, running longitudi nally and centrally its entire length. One side, so, of this vertical flange f-is slightly inclined, (say about eighty degrees to the horizontal plane of the bed D,) and the upper surface of the guide F contiguous to the base of thisinclined side surface, 00, is inclined at right angles to the same. This guide F is placed in alignment with the saw 0, and is provided with a vertical slot, 9, which intersects the inclined side 00 thereof for said saw to pass through. The distance from the transverse center of the opening of the slot to the base of the inclined side 00 corresponds to about onehalf the width of the stereotype-plate. Thus, if the saw is putin motion and the plate placed against said side a: and pushed over the saw, an incision will be made in the side wall of the mortise, as shown in Fig. 4. The plate is then reversed and the incision made in the other side wall of the mortise, converting. it into a T-mortise.

It will nowbe observed that, ifthe incision f the saw is too deep in thesidesof the mor .se, by manipulating the hand-screw to raise 1e bed'plate it can be made shallower, orvice ersa, or, if the saw does not cut into the sides f the mortises at the proper point, the slots in ac bed-plate and guide are wide enough to ermit of the lateral adjustment of the bedlate.

In Fig. 5 is shown the guide G for feeding 1e bases to the saw. In order to form the T- anon, I place the guide Grin alignlnentwith 1e saw and secure it on the bed-plate in the ime manner as the guide F. Like guide F, uide G has a vertical flange, h, one side, y, f which is inclined, and the surface contiguusto the base of saicl-inclinedside is inclined" t" right angles to the same. In the inclined ide a distance from the base corresponding to ne-halfthe width of the stereotype base is a )ngitudinal mortise corresponding in depth nd width to the tenon of the same. The slot :i'said guide-in which the saw operates strikes trough the lower side wall .of the mortise nd into the side wall of the tenon of the base :dthereto. When one side of the tenonof ie'base is inortised, the base is reversed andme other side out in the same manner.

The location and depth of the incisions of ic tenon form a T'shaped tenonwhich corasponds-to the I -mortise in the plate.

If desired, [do not deem it a departure from' iespirit of myinventionto make the bed late"; oscillate by means other than those decribcd -c. 9., acam or cams having handles ith which to'operate them'may be used;

vertical flange, one side of which is inclined and is intersected by a vertical slot through which said saw passes.

4. The combination, with a circular'saw,cf

the bed-plate capable of vertical adjustment; and a guide one side of which is inclinedand is intersectedby a vertical slot, andwhichis placed in alignment witli' said saw.

5. The combination, with a circularsaw ,of" a bed-plate, means for adjusting the samelat erally, and a guide'one side of whicliisin' clined and intersected by a'vertical slot, and

which is placed in alignment=with said saw;

In testimony that I claim the foregoing,- as" my own-I hereunto affix my signature in pres ence of two witnesses.

GEORGE E. LLOYD Witnesses:

- JAMES H. OoYNE,

FRANK D. THOMASON. 

